Pump



M. C. LlLLY July 16, 1929.

PUMP

Filed May 22. 1928 [nq/enter Patented July 16, 1929.

MARCINE CLINE LILLY,

OF DECATUR, ILLINOIS.

PUMP.

Application filed May 22,

The present invention relates to pumps and conprises essentially an air pump adapted particularly for pumping air into vehicle tires and has for its principal object to provide a novel pump structure in which the cylinder of the punp is fixedly attached tor movement with the Operating handle and arranging a tubular stem within the cylinder to which is fixedly attached a piston slidably disposed within the cylinder whereby to force the air through the stem.

A further object of the invention is to provide a device of this character of a simple' and practical Construction which is efi icient and reliable in performance, relatively inexpensive to manufacture, and assembled in operative position and otherwise adapted for the purposes for which the same is intended.

Other objects of the invention will become apparent as the nature of the invention proceeds, and when taken in connection with the accompanying drawing.

In the drawings:

The figure is a vertical sectional view through the pump and the supporting base theretor Reterring now to the drawing in detail, wherein for the purpose of illustration I have disclosed a preferred embodiment of my invention, the numeral 5 indicates a supporting base, 5, which may be of any suitable formation, and upon which the feet of the operator may be placed for securing the pnmp upon the ground, the upper portion of the base having a standard G extending therefrom, the upper end of the standard being hollow and open at its upper end, said upper end being internally threaded and adapted to receive the lower end of the stern The stern 7 is hollow throughout its length and its lower end opens into a valve housing 8, formed within the standard and within which is arranged a ball valve 9, adapted to control the downwardly extending air passage 10, communicating with laterally extending air intake ports ll, opening` through the opposite sides of the standard. From one side of the standard 6 extends a tubular boss 12, also having a passage 13, 'formed therein and communicating with the chanber 8 ot'the passage 10. To the outer end of the board 12 is attached an air hose 13 of the type generally provided tor attachment to a vehicle tire. The stern? extends upwardly through an opening forned in a plug 14, Secured in the lower 'changes and modifications,

1928. Serial No. 279,?16.

end of a pump' cylinder 15, the upper end of the cylinder being open and provided with a threaded cap 16, upon the upper portion of which is formed a pair of spaced ears 17 having openings toi-med therein and through which is inserted a handle rod 18, outwardly from each side of the cap and to the opposite ends of which is secured handle grips 19.

The upper end of-the stern within the cylinder-carried a piston head 20, preterably in the form ot a leather Washer snugly fitted withingthe cylinder and secured in position to the upper end of the stem by nuts 21 on the stemat each side of the washer. It will thus be apparent that upon the upward novement ot the handle 19 and the cylinder 15 will be moved upwardly on the stem until the suction created above the piston head within the cylinder, the ball valve 9 will be unseated from the intake passage 10 and permit air to enter the upper portion of the eylinder to the stem 7. i i

Upon the downward stroke of the handle, the piston head 20 will operate to force the air 'rom the cylinder downwardly through the stem and out through the hose 18 so as to cause inflation of the tire. It is obvious that the invention is susceptible of various without departing from the spirit or s'cope of the invention or sacrificing any of 'its advantages and I accordingly claim allsuch forms of the device to which I am entitled Having thus described my invention, what I claim as new is:

1. A Vpump comprising a base, a standard extending upwardly therefrom, said standard being hollow at its upper end, an air intake port communicating with the hollow portion of the standard, a check valve for said air intake port, a 'discharge passage communicating with the hollow portion of the standard above said check valve, a tubular stern threadedly attached to the upper portion of said standard, a cylinder slidably mounted for vertical movement upon said stem, and a piston head attached to the upper end of the stern within the cylinder and adapted upon opposite sliding movement of the cylinder to efi'ect the intake and discharge ot air therefrom.

2. A pump eomprising a supporting base, a standard extending upwardly therefrom, said standard being hollow at its 'upper 7 disposed end, air intake and discharge ports communicating With the hollow portion of the standard, a check valve arranged within the standard controlling communication betWeen the intake port thereof, a tuhular stern threadedly attached to the upper portion of the standard, a pump cylinder slidably mounted on said stem, a piston head attached at the upper end of the stem, and disposed within the cylinde'r and cooperating With the cylinder during the movement thereof to actuate said check valve Whereby to admit air into the cylinder during the upward movement of the cylinder, and to discharge the same thererom upon the downward movement thereo', a cap threadedly attached at the upper end of the cylinder, and a handle Secured to said cap.

3. A pump comprisng a cylinder, a piston arranged 'or operation therein', a hol: low stem for the piston communicating at its' upper end With the interier of the cylinder, a hollow standard attached at the lower end of the stem and connnunicating there- 4. A pump comprising a cylinder, a piston arranged 'for operation therein, a holloW 9 stem for the pisten communicating at its upper end With the interier of the cylinder, a holloW standard attached at the lower end of the stem, said standard havingintake and discharge ports therein, a Valve chamber ormed in said standard having communication With each of the ports and With the stem and an automatic valve arranged in the chamber adapted to control said intake port upon reversedly Operating the pump,

In testimony whereo I afiix my signature.

MABCINE CLINE LILLY. 

